Refrigerator quit cooling

[Viva Las Vegas JDR]

We had some work done on our motor home and when all was said and done we find that the fridge is warm. It was cooling on both AC and LP before any repairs now it does absolutely nothing. It seems like it is working, you can hear it come on when it's on LP, the check light never comes on and it switches fine from AC to LP. Just NEVER cools at all! This just came on suddenly. We've checked out everything that we know, what does it sound like to you? Hopefully not a circuit board but what else could it be? Fuses okay, all burners clean etc.